lwattsstudent
05.07.2019 •
Physics
Two loudspeakers, and are driven by the same amplifier and emit sinusoidal waves in phase. speaker is 2.00 m to the right of speaker . consider point along the extension of the line connecting the speakers, 1.00 m to the right of speaker . both speakers emit sound waves that travel directly from the speaker to point . what is the lowest frequency for which (a) constructive interference occurs at point ; (b) destructive interference occurs at point ?
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Ответ:
in this ionic compound, oxygen has 2 excess electrons and magnesium has two electrons missing.
Explanation:
When oxygen is mixed in a chemical reaction, it acquires two electrons from magnesium, to become an ion with 2 negative .
Mg + O → MgO
Therefore, in this ionic compound, oxygen has 2 excess electrons and magnesium has two electrons missing